I need some help team. I have come to own some lightly used (no scratch or dent, just surface rust) Safari Guard rock sliders from my wonderful mechanic for a steal ($125). Safari guard's direction calls for a "rivnut gun" or something to that effect. Obviously I do not have that. Also there are a lot more holes on the sliders than on my truck. So my question is the best way to mount without gun? Do I drill holes to use them all? Or if anyone has done this themselves before I can use all the advice I can get and it would be greatly appreciated.